A new type of explosion-proof sand three-way valve

Abstract

This utility model discloses a novel explosion-proof and sand-proof three-way valve, specifically relating to the field of three-way valve core technology. It includes a valve body with an upper cover on its upper part. A valve cover is located within the inner cavity of the upper circular groove of the upper cover. An axial fixing groove is located in the middle of the bottom wall of the valve body, and a valve core shaft is located within the axial fixing groove. A valve core for controlling the water flow direction is located together in the inner cavity of the valve cover and on the upper part of the valve core shaft. This novel explosion-proof and sand-proof three-way valve, through a sand storage cavity opened on the back plate of the valve core, provides space for sand accumulation and changes the direction of compression. This allows sand in the water flow to preferentially fill the sand storage cavity rather than directly compressing the sealing structure, avoiding lateral compression and friction damage to the sealing components from sand. The valve core adopts a U-shaped groove structure and is equipped with an integrally vulcanized groove-type sealing ring. Simultaneously, the groove-type sealing ring is firmly fixed in the U-shaped groove using screws through screw holes, ensuring the stability of the sealing structure and preventing sand from entering the sealing gap, thus reducing wear on the sealing components.

Description

Technical Field

[0001] This utility model relates to the field of three-way valve core technology, and in particular to a novel explosion-proof and sand-proof three-way valve. Background Technology

[0002] In fields involving fluid transportation, such as oil extraction, natural gas transportation, and irrigation in desert areas, the three-way valve core is a key component for realizing fluid diversion, merging, or flow direction switching. Its operational stability and service life directly affect the efficiency and safety of the entire transportation system.

[0003] Groundwater in desert areas has a high sand content, and the silt in the fluid is prone to accumulate inside the valve core. The existing three-way valve core and sealing structure design do not take into account the sand prevention requirements. The silt will directly squeeze the sealing gasket between the valve core and the valve body. After long-term use, it is easy to cause wear, deformation or even cracking of the sealing gasket, resulting in water leakage from the valve core. This not only wastes precious irrigation water resources, but also causes corrosion of the valve body due to water leakage, shortening the overall service life of the valve core.

[0004] Meanwhile, some three-way valve cores used for oil and natural gas transportation have insufficient rigidity in their valve body structure due to the pressure of the transported medium and the potential impact loads during operation. Under pressure fluctuations or impacts, problems such as valve body cracking and interface leakage are likely to occur, which may even lead to safety accidents. They are difficult to meet the requirements for explosion-proof and impact-resistant use.

[0005] In the existing technology, valve core seals require ultrasonic processing to complete the installation. However, ultrasonic processing can produce defective products. If the ultrasonic processing is not done properly, side leakage is likely to occur during use, or even an explosion may occur, rendering all parts unusable and increasing operating costs.

[0006] Therefore, a new type of explosion-proof and sand-proof three-way valve is needed to solve the above problems. Utility Model Content

[0007] The main purpose of this utility model is to provide a new type of explosion-proof and sand-proof three-way valve, which can effectively solve the problems mentioned above.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A novel explosion-proof and sand-proof three-way valve includes a valve body, an upper cover on the upper part of the valve body, a valve cover in the inner cavity of the upper circular groove of the upper cover, an axial fixing groove in the middle of the bottom wall of the valve body, a valve core shaft in the axial fixing groove, and a valve core for controlling the flow direction of water in the inner cavity of the valve cover and the upper part of the valve core shaft. The outer surface of the sand storage chamber of the valve core is provided with a U-shaped groove. The inner cavity of the U-shaped groove is provided with a corresponding groove plug-type sealing ring. The groove plug-type sealing ring is integrally vulcanized. Limiting ribs are provided on both the upper and lower sides of the deep inner cavity of the U-shaped groove. The groove plug-type sealing ring is provided with two anti-detachment grooves on the upper and lower sides corresponding to the limiting ribs. When the groove plug-type sealing ring is embedded in the U-shaped groove, the limiting ribs are embedded in the anti-detachment grooves. The valve core is provided with two screw holes on the left and right vertical surfaces. The groove plug-type sealing ring is fixed in the valve core by screws.

[0009] Preferably, the valve body has an inlet / outlet on both the left and right sides, the upper cover has an inlet / outlet on the front side, and the bottom wall of the valve body is provided with several reinforcing ribs in a ring.

[0010] Preferably, the valve core sealing surface has a sand storage cavity, and the inlet and outlet of the valve body are also provided with several anti-detachment fixing rings.

[0011] Preferably, after the top cover is installed on the valve body, it forms a rectangular cavity. A second sealing ring is provided in the rectangular cavity. After the top cover, valve body and second sealing ring are installed, a three-layer self-locking explosion-proof sealing structure is formed.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model provides a sand storage cavity on the sealing surface of the valve core, which can change the direction of extrusion and allow the sand in the water flow to fill the sand storage cavity first, rather than directly extruding the sealing structure. This avoids lateral extrusion and friction damage to the sealing components caused by the sand. The sand storage cavity of the valve core adopts a U-shaped groove structure and is equipped with an integrally vulcanized groove plug-type sealing ring. At the same time, the groove plug-type sealing ring is firmly fixed in the U-shaped groove by screw holes and screws. This not only ensures the stability of the sealing structure, but also prevents sand from entering the sealing gap, reduces the wear of sand on the sealing components, and thus extends the overall service life of the valve core.

[0013] 2. This utility model uses a slightly inclined surface at the junction of the top cover and the valve body to press together, forming a self-locking explosion-proof structure. Then, through the sealing ring II set in the rectangular cavity formed after installation, the top cover, valve body and sealing ring II form a three-layer seal. Since the contact part between the valve body and the top cover is designed with an inclined surface, the sealing ring II will fit more tightly when squeezed by water pressure. This not only reduces the technical requirements of the installation workers, but also further improves the sealing effect and prevents leakage at the interface. At the same time, the top cover is installed on the valve body by screw connection, which is more firm and stable than the traditional ultrasonic welding method, and improves the explosion-proof performance of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of this utility model from another perspective; Figure 4 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 5 This is a schematic diagram of the valve body structure of this utility model; Figure 6 This is a schematic diagram of another state of the valve body structure of this utility model; Figure 7 This is a schematic diagram of another state of the valve body structure of this utility model; Figure 8 This is a schematic diagram of another state of the valve body structure of this utility model; Figure 9 This is a schematic diagram of another state of the valve body structure of this utility model; Figure 10 This is a schematic diagram of another state of the valve body structure of this utility model; Figure 11 This is a schematic diagram of another state of the valve body structure of this utility model; Figure 12 This is a schematic diagram of another state of the valve body structure of this utility model; Figure 13 For the present utility model Figure 2 Enlarged diagram of point A in the middle.

[0015] In the diagram: 1. Top cover; 2. Inlet / outlet 1; 3. Valve body; 4. Inlet / outlet 2; 5. Valve cover; 6. Valve core; 7. Valve core shaft; 8. Anti-detachment fixing ring; 9. Reinforcing rib; 10. Sand storage chamber; 11. Groove plug-type sealing ring 1; 12. Anti-detachment groove; 13. U-shaped groove; 14. Screw hole; 15. Limiting rib; 16. Sealing ring 2. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] Example 1, as Figures 1-5 and Figure 13 As shown, a novel explosion-proof and sand-proof three-way valve includes a valve body 3, an upper cover 1 on the upper part of the valve body 3, a valve cover 5 in the inner cavity of the upper circular groove of the upper cover 1, an axial fixing groove in the middle of the bottom wall of the valve body 3, a valve core shaft 7 in the axial fixing groove, and a valve core 6 for controlling the flow direction of water in the inner cavity of the valve cover 5 and the upper part of the valve core shaft 7. The valve core 6 has a U-shaped groove 13 on its sealing surface. The inner cavity of the U-shaped groove 13 has a corresponding groove plug-type sealing ring 11. The groove plug-type sealing ring 11 is integrally vulcanized. The upper and lower sides of the inner cavity of the U-shaped groove 13 are provided with limiting ribs 15. The upper and lower sides of the groove plug-type sealing ring 11 have two anti-disengagement grooves 12 corresponding to the limiting ribs 15. When the groove plug-type sealing ring 11 is embedded in the U-shaped groove 13, the limiting ribs 15 are embedded in the anti-disengagement grooves 12. The valve core 6 has two screw holes 14 on the vertical surfaces of the left and right sides. The groove plug-type sealing ring 11 is fixed in the valve core 6 with screws.

[0018] Furthermore, the valve body 3 has inlet and outlet ports 2 on both the left and right sides, and inlet and outlet ports 4 on the front side of the valve body 3. The bottom wall of the valve body 3 is provided with several reinforcing ribs 9 in a ring.

[0019] Furthermore, the valve core 6 has a sand storage chamber 10 on its sealing surface, and the valve body 3 has several anti-detachment fixing rings 8 at the inlet and outlet.

[0020] Furthermore, after the upper cover 1 is installed on the valve body 3, a rectangular cavity is formed. A second sealing ring 16 is provided in the rectangular cavity. After the upper cover 1, valve body 3 and second sealing ring 16 are installed, a three-layer seal is formed.

[0021] The opening control method of this device is as follows: S1, Dual-pass When the valve core 6 is located in the left or right part of the inner cavity of the valve body 3, the valve core 6 will block the inlet / outlet port 2 on the left or the inlet / outlet port 2 on the right. At this time, after the water flows into the valve body 3 from the inlet / outlet port 2, because the valve core 6 has blocked the inlet / outlet port 2 on the left or the right, the water flowing from the inlet / outlet port 2 can only flow out from the inlet / outlet port 2 that has not been blocked by the valve core 6, forming a double passage.

[0022] S2, Three-way When the valve core 6 is located at the rear of the inner cavity of the valve body 3, the valve core 6 will not block the two inlet and outlet ports 2. At this time, the water flows into the inner cavity of the valve body 3 from the inlet and outlet ports 4 and then flows out from the inlet and outlet ports 2 on both sides, forming a three-way valve.

[0023] S3, Not working When the valve core 6 is located at the front of the inner cavity of the valve body 3, the valve core 6 will block the inlet and outlet ports 4. At this time, the water flow cannot enter the inner cavity of the valve body 3 through the inlet and outlet ports 4, resulting in a blockage.

[0024] In the above description, after the upper cover 1 is installed on the valve body 3, the rectangular cavity formed can accommodate the sealing ring 16, so that the upper cover 1, the valve body 3 and the sealing ring 16 form a three-layer seal. The first layer is the inner ring at the connection between the upper cover 1 and the valve body 3, the second layer is the part where the valve body 3 contacts the upper cover 1, and the third layer is the outer ring at the connection between the upper cover 1 and the valve body 3. The sealing is further enhanced by the sealing ring 16. The second layer, the valve body 3, is inclined, which not only facilitates installation, but also makes the sealing ring 16 tighter and tighter due to the squeezing direction of the water pressure during use. This reduces the technical skills and installation requirements of the installer and improves the practicality of the device.

[0025] In the above, the design of the reinforcing rib 9 reduces the cost of the device while ensuring its rigidity.

[0026] In the above-mentioned design, the sand storage chamber 10 within the valve core 6 further reduces the cost of the device, decreases the required raw materials, and allows for a reduction in product thickness and cooling time during injection molding, thereby improving processing efficiency. Furthermore, the sand storage chamber 10 effectively stores sand. Under existing irrigation conditions, groundwater sediment gradually accumulates. Without a cavity, the sediment will slowly accumulate and press against the sealing gaskets on both sides. When too much sediment is pressed, opening and closing the valve may cause friction damage to the sealing gaskets, resulting in leakage and wasting water resources. The principle is as follows: The sand storage chamber 10 provides a space for the accumulation of mud and sand, changing the direction of compression. During the accumulation process, the mud and sand will preferentially fill the sand storage chamber 10 instead of directly compressing the grooved plug sealing ring 11, thereby avoiding friction damage to the sealing gasket due to mud and sand compression, ensuring the sealing performance of the valve core, and enabling normal use when there is too much sand and gravel.

[0027] In practical applications, when water containing sediment flows through valve core 6, the sediment will move into the interior of valve core 6 with the water flow. Due to the presence of the cavity, the sediment will enter the cavity and accumulate in it under the action of gravity and water flow. It will not directly exert lateral pressure on the grooved plug seal ring 11. As time goes by, even if the sediment continues to accumulate, it will only fill the cavity. As long as the cavity is not completely filled, it can continuously protect the grooved plug seal ring 11, maintain the normal sealing performance of valve core 6, and prevent water leakage.

[0028] In the above, the design of the anti-detachment fixing ring 8 allows the valve core 6 to squeeze the groove plug sealing ring 11 during the contact between the groove plug sealing ring 11 and the edge of the inlet and outlet 2 when the valve core 6 rotates to the front and left parts and seals the inlet and outlet 4 and the two inlet and outlet 2, so that the sealing effect of the groove plug sealing ring 11 is more stable.

[0029] In the above, the screw hole 14 can be used to fix the grooved seal ring 11 into the U-shaped groove 13 opened on the valve core 6 by screws. The grooved seal ring 11 is integrally vulcanized and plays a fixing role.

[0030] In the above, the limiting rib 15 is used to prevent lateral movement when the valve core 6 drives the grooved plug seal ring 11 to rotate, thereby further improving the stability of the grooved plug seal ring 11.

[0031] In the above-mentioned configuration, the top cover is installed on the valve body using bolts. Compared to the traditional ultrasonic welding method, this method provides a more robust and stable fit, enhancing the explosion-proof performance of the device. Based on Embodiment 1, this device also has other implementation methods. See Embodiment 2 for details. Figure 6 The double-layer design of the grooved plug seal ring 11 in Embodiment 1 is removed, and the limiting rib 15 and screw hole 14 are also removed, minimizing the consumption of raw materials. At the same time, the mold requirements are reduced, the structure is simplified, and the installation is quicker. During installation, the grooved plug seal ring 11 only needs to be installed when the valve core 6 frame is still hot after production. According to the principle of thermal expansion and contraction, the U-shaped groove 13 will automatically clamp the grooved plug seal ring 11 after the valve core 6 cools down, thereby meeting the usage requirements. Installation can be completed without ultrasonic welding, thereby reducing the number of defective products generated during processing and reducing operating costs.

[0032] Example 3, see Figure 7 Based on Embodiment 1, the stepped design of the plug-type sealing ring 11 is retained, while the screw hole 14 and the limiting rib 15 are removed. The U-shaped groove 13 is also designed to fit the shape of the plug-type sealing ring 11. The installation method is the same: when the valve core 6 is freshly produced and has a certain amount of heat, the plug-type sealing ring 11 is installed in the U-shaped groove 13. After the valve core 6 cools down, the U-shaped groove 13 will automatically clamp the plug-type sealing ring 11. This design can minimize the operating cost, but it requires higher requirements for the mold. The stepped design of the plug-type sealing ring 11 can improve the sealing performance of the valve core 6.

[0033] Example 4, see Figure 8Based on Embodiment 1, the screw hole 14 is retained, and the double-layer design of the limiting rib 15 and the grooved seal ring 11 is removed. When the limiting rib 15 is removed, the anti-disengagement groove 12 does not need to be opened on the grooved seal ring 11. This means that when installing the grooved seal ring 11, it is not necessary to install the grooved seal ring 11 in the U-shaped groove 13 when the valve core 6 is just produced. After the valve core 6 has cooled down, the grooved seal ring 11 is installed in the inner cavity of the U-shaped groove 13. Then, bolts are driven between the valve core 6 and the grooved seal ring 11 through the screw hole 14 to fix the grooved seal ring 11 in the U-shaped groove 13. This minimizes the workload and reduces the operating cost.

[0034] Example 5, see Figure 9 Based on Embodiment 1, the limiting rib 15 is retained, while the double-layer design and screw hole 14 of the grooved plug seal ring 11 are removed. After the limiting rib 15 is retained, an anti-disengagement groove 12 corresponding to the limiting rib 15 needs to be opened on the grooved plug seal ring 11. The installation method of the grooved plug seal ring 11 is the same as that of Embodiments 2 and 3. This reduces the consumption of raw materials, and when the valve core 6 is rotated by the limiting rib 15, the grooved plug seal ring 11 will not move laterally, thus improving the stability of the grooved plug seal ring 11.

[0035] Example 6, see Figure 10 Based on Embodiment 1, the limiting rib 15 is removed, while the double-layer design of the grooved plug-type sealing ring 11 and the screw hole 14 are retained. At the same time, the anti-disengagement groove 12 is not required on the grooved plug-type sealing ring 11. While reducing the requirements of the mold, the same sealing effect can be achieved through the stepped double-layer design of the grooved plug-type sealing ring 11. Retaining the screw hole 14 allows the grooved plug-type sealing ring 11 to be installed in the U-shaped groove 13 after the valve core 6 has cooled down, and then the grooved plug-type sealing ring 11 is fixed in the U-shaped groove 13 through the screw hole 14, reducing the workload.

[0036] Example 7, see Figure 11 Based on Embodiment 1, the double-layer stepped design of limiting rib 15 and groove plug-type sealing ring 11 is retained. The installation method of groove plug-type sealing ring 11 is the same as that of Embodiments 2 and 3, so that groove plug-type sealing ring 11 can achieve a better sealing effect on valve core 6. However, it is necessary to increase the requirements of the mold. Limiting rib 15 improves the stability of anti-detachment groove 12.

[0037] Example 8, see Figure 12 Based on Embodiment 1, the double-layer stepped design of the groove plug seal ring 11 is removed, while the screw hole 14 and the limiting rib 15 are retained. This reduces the requirements for the mold, and the stability of the groove plug seal ring 11 can be improved through the screw hole 14 and the limiting rib 15.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A new type of explosion-proof and sand-proof tee valve, comprising a valve body (3), characterized in that: The valve body (3) is provided with an upper cover (1) on the upper part. The upper part of the upper cover (1) is provided with a valve cover (5) in the inner cavity of the circular groove. The valve body (3) is provided with an axial fixing groove in the middle of the bottom wall. The valve core shaft (7) is provided in the axial fixing groove. The valve core (6) for controlling the flow direction of water is provided in the inner cavity of the valve cover (5) and the upper part of the valve core shaft (7). The valve core (6) has a U-shaped groove (13) on its sealing surface. The U-shaped groove (13) has a corresponding groove plug sealing ring (11) inside. The groove plug sealing ring (11) is formed by vulcanization in one piece. The valve core (6) has two screw holes (14) on both the left and right vertical surfaces. The groove plug sealing ring (11) is fixed in the valve core (6) by screws.

2. A new anti-explosion and sand-proof tee valve according to claim 1, characterized in that: The valve body (3) has inlet and outlet ports 1 (2) on both the left and right sides, and inlet and outlet ports 2 (4) on the front side of the valve body (3). The bottom wall of the valve body (3) is provided with several reinforcing ribs (9) in a ring.

3. The new anti-explosion and sand-proof tee valve according to claim 1, characterized in that: The valve core (6) has a sand storage cavity (10) on its sealing surface, and the valve body (3) has several anti-detachment fixing rings (8) on its inner surface inlet and outlet.

4. The new anti-explosion and sand-proof tee valve according to claim 1, characterized in that: After the top cover (1) is installed on the valve body (3), a rectangular cavity is formed. A second sealing ring (16) is provided in the rectangular cavity. After the top cover (1), valve body (3) and second sealing ring (16) are installed, a three-layer seal is formed.

Images